What’s Vulnerable › Vulnerabilities

CVE-2026-25769: Wazuh Cluster vulnerable to Remote Code Execution via Insecure Deserialization

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-17 · updated 2026-06-17
• Weakness: CWE-502

Description

Wazuh is a free and open source platform used for threat prevention, detection, and response. Versions 4.0.0 through 4.14.2 have a Remote Code Execution (RCE) vulnerability due to Deserialization of Untrusted Data). All Wazuh deployments using cluster mode (master/worker architecture) and any organization with a compromised worker node (e.g., through initial access, insider threat, or supply chain attack) are impacted. An attacker who gains access to a worker node (through any means) can achieve full RCE on the master node with root privileges. Version 4.14.3 fixes the issue.

Affected products

• wazuh: from 4.0.0 before 4.14.3 — fixed in 4.14.3

How to fix

Upgrade to a fixed version: wazuh 4.14.3. Check the vendor advisory for mitigations.

References

• https://drive.google.com/drive/folders/1WlkKNmHexz8212OVED9O6M_3pI8b6qNI?usp=sharing
• https://github.com/wazuh/wazuh/security/advisories/GHSA-3gm7-962f-fxw5
• https://github.com/wazuh/wazuh/security/advisories/GHSA-3gm7-962f-fxw5

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